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Finding the Fourth Proportional to 620.96, 931.44 and 366.08

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Solution

The fourth proportional to 620.96, 931.44 and 366.08 is: 549.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.96 : 931.44 = 366.08 : x
  2. Step 2: Convert to fraction form
    620.96/931.44 = 366.08/x
  3. Step 3: Cross multiply
    620.96x = 931.44 × 366.08
  4. Step 4: Simplify right side
    620.96x = 340,981.56
  5. Step 5: Solve for x
    x = 340,981.56/620.96
  6. Step 6: Final answer
    x = 549.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.